Island



(No Model.)

G. H. FULLER.

MANUFAUTURE 0F JEWELERS FINDINGS. No. 323,927. Patented Aug. 11, 1885.

N. PETERS. Photo-Lllhngrzpher. Waihmgion, D. C.

UNITED STATES PATENT OFFICE.

GEORGE H. FULLER, OF PAVVTUOKET, RHODE ISLAND.

MANUFACTURE OF JEWELERS FINDINGS.

QFIIGIFIGATIQN forming part of Letters Patent No. 323,927, dated August11, 1885.

Application filed December 17, 1884. (No model.)

To aZZ whom it may concern.-

Be it known that I, GEORGE H. FULLER, of the town of Paw tucket, in thecounty of Providence and State of Rhode Island, have invented new anduseful Improvements in the Manufacture of Jewelers Findings; and I dohereby declare that the following, taken in connection with the drawingswhich accompany and form part of this specification, is a description ofmy invention sufficient to enable those skilled in the art to practiceit.

My invention relates to the joint of articles of pin-jewelry by whichthe pin-stem is attached to the pin-bar; and it consists, esential ly,of an improvement upon the invention for which Letters Patent of theUnited States No. 286,601 were granted to me October 16, 1883, wherebyis secured greater strength, durability, and economy in those articlesof jewelry to which it is applied.

Referring to the drawings, Figure 1 is a pe spective of the cup-j0intfrom which is formed the journal-bearings, by the prick-punchingprocess, of the pinstern. Fig. 2 represents the pin-stem, pin-bar, andholder combined. Fig. 3 represents various modifications of Fig. 1. inwhich the. base of the holder is shown in different configurations; andFig. 4 is a vertical section of the pin-joint taken through the line.9000, Fig. 2.

Similar letters of reference indicate.corresponding parts throughout thevarious figures.

The cup-joint in jewelers findings represented by Fig. 1. andthemodifications shown in Fig. 3, is an elongated small metallic cup,11, elevated above the flanged base a, cut from or struck up from apiece of sheet metal, the operation producing the article inthe shaperequired. It will re seen that the diameter of the base exceeds thediameter of the cup, in

asmuch as the base is a flange of the cup. The flange is the part of thecup-joint which is soldered to the pin-bar. By uniting the cupjoint tothe bar upon a base broader than the direct bearings of the pin givesstability to the article, because the resistance to any purchase made onthe pin-stem would be directed in a line outside the cupa condition thatfavors strength and permanence.

The modifications of the eupjoint shown in Fig. 3 illustrate some of themany ornamental forms that may be given to the flange a.

After the cup-joint is attached to the bar 0, the pin-stem d is insertedinto the cup I), and the checks or opposite sides are prick-punched orotherwise shaped to make a journal-bearing for the pin-stem.

Heretofore the cup-joint was constructed Without the flange a, andprovided with a base, conical in form, whose diameter was even less thanthe cup-j oint itself. The limited surface to which the solder could beapplied to attach the cup-joint to the pin bar in making the unionrequired precision and careful workmanship,which entailed increasedexpense to the product.

Having described my invention, I claim as new and desire to secure byLetters Patent-- 1. In jewelers findings, a cup joint consisting of anelongated metallic cup having a flanged base formed from a piece ofsheet metal, for the uses set forth, and substantially as specified.

2. The combination of the cup I), the flange a, bar a, and pinstem d,substantially as specified.

GEORGE H. FULLER.

\Vitnesses:

CHAS. H. FULLER, GEO. W. PALMER.

